"I think they're afraid of a working-class person," said firefighters union president Bob Brooks after a Republican PAC dumped $1 million to blunt his momentum in the Democratic Primary for Pennsylvania's 7th district.

Pennsylvania’s 7th District has been close to evenly split in recent general elections. This year, the Democratic primary is also sending signals about what matters to the party.

"I think they're afraid of a working-class person," said firefighters union president Bob Brooks after a Republican PAC dumped $1 million to blunt his momentum in the Democratic…